Police said they received a call from a concerned citizen who saw a man dressed in black walking into the school with what looked like a rifle. Authorities searched the school and found no gunman.

"Fortunately, no gunman was found and there were no report of injuries," said a tweet from the city of Batavia.

Police said they did find a person fitting the caller's description carrying a baseball bat.

The scene has been cleared and police say the high school is now safe. No injuries were reported.

Batavia police said they take all calls seriously and will use necessary resources to make sure schools are safe.

Classes will resume at 10 a.m.

Batavia High School was on lockdown for about two hours as police searched the premises early Monday. Batavia Public School District 101 had alerted all students and facility that no one was allowed in the building. Any students who had been picked up by a school bus were returned home.